<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		*{
			margin: 0;
			padding: 0;
		}
		div {
			height: 200px;
			background-color: pink;

		}
	</style>
	<script src='jquery-1.11.1.min.js'></script>
	<script>
		$(function(){
			// console.log(222);
			$('#btn').click(function(){
				$('div').hide();
			})
		})
	</script>
</head>
<body>
<button id="btn">测试</button>
	<div></div>
</body>
</html>